The Wallflower's Wassail Punch: A Once Upon a Widow Book 8 (Revenge of the Wallflowers #35)
Aubrey Wynne

Lord Wilkinson has been a widow for twenty years. Now that his daughter is betrothed, he is ready to consider taking another wife. Invited to a house party by an old friend, he arrives to find the earl’s daughter is the guest of honor, and the week of revelry is a ploy to marry her off. Wilkinson is surprised the other gentlemen view her as a quiet, awkward female. The viscount, seeing a striking, intelligent woman with a dry wit only he seems to appreciate, comes to her rescue.
When the two become allies, their partnership soon goes beyond friendship. But will Lady Annette’s age and the viscount’s interfering daughter keep them from a happy ending under the mistletoe?